他的突然离世让全家人陷入悲痛。

His sudden ___death left the whole family in grief.

医生两小时前宣布了病人的死亡。

The doctor declared the patient's ___death two hours ago.

智能手机的出现意味着传统手机的消亡。

The rise of smartphones marked the ___death of traditional mobile phones.

医生确认他的死因是心脏病发作。

The doctor confirmed that the ___death was caused by a heart attack.